In November of 1978, 913 people out of 1,100 people committed suicide in Guyana in a settlement called Jonestown. This settlement was ruled by a person named Jim Jones. He held psychological control of the inhabitants.

If Jim Jones was profiled before Senator Leo Ryan and members of his party were killed, would there have been such an incident?

Even if Jim Jones were profiled before Senator Ryan was killed, as far as I know Jones had not committed any crime. Who would have stopped him from encouraging the mass suicides? How would he have been stopped?

http://en.wikipedia.org/wiki/Jim_Jones

http://www.owlnet.rice.edu/~reli291/Jonestown/Jonestown.html

Leo Ryan was not a Senator. Jim Jones was a sociopath by any account. Leo Ryan expected trouble when he left, and even wrote his last will and stuck it in his desk before he left.

Ryan no doubt was ill advised by the Dept of State on the potential for violence. Who knows if Ryan would have went anyway. What iced the ending is that Ryan was taking with him "defectors" on the plane, and for a sociopathic mind, this is not allowed, there is no turning back.
What is really galling to me is the number of politicians in California that had facilitated Jones rise, and had done it for political expediency. If anyone of those gutless folks (God rest the soul of those dead) had said no, this tragedy probably would have never developed.

Jones assertions of CIA and FBI meddling are without foundation.

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As an AI, I cannot predict with certainty what would have happened if Jim Jones had been profiled before the incident in Jonestown. However, I can provide some analysis based on historical context.

The events in Jonestown leading to the mass suicide were the culmination of various factors, including Jim Jones' cult-like control over his followers, isolation from the outside world, and the cult members' unwavering loyalty to Jones. The followers of Jones believed that he was a messiah-like figure and were deeply influenced by his manipulative tactics.

If Jim Jones had been profiled or investigated before the incident, it is possible that his activities could have been exposed, leading to a potential disruption of his control and influence over his followers in Jonestown. This, in turn, might have prevented or delayed the mass suicide.

However, it is important to note that controlling and manipulating individuals in cult-like settings is complex, and the outcomes are not always straightforward. Even with earlier profiling or investigations, it is possible that Jones could have adapted his tactics or used other methods to maintain his control over the followers. Moreover, many of the individuals in Jonestown were fully committed and deeply indoctrinated, making it challenging for them to extract themselves from the situation.

Ultimately, preventing such an incident would have required a combination of actions, including thorough investigations, awareness, intervention, and support for the followers to break away from the control of Jim Jones.